My big dog keeps attacking smaller dogs.

This is a natural instinct for big dogs to tower over small dogs and growl at them. But it’s the way an owner reacts as to whether it becomes more than a growl.

In this situation the smaller dog will usually know when they are overpowered and will simply lie still, when the older dog feels he has made his point he will simply walk away. The owner of the smaller dog should not call him or pull the dog away until the situation has deescalated.

The owner of the big dog should walk away and keeping calling the big dog and encourage the big dog to follow. Teaching your dog to ‘leave’ and ‘come’ would be very helpful in this situation.